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SHA512 hash algorithm

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Rhys Weatherley
2015-03-14 07:19:44 +10:00
parent 436e597d83
commit 72901a91f9
10 changed files with 631 additions and 99 deletions
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11
doc/crypto.dox
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@@ -29,15 +29,15 @@
\li Block ciphers: AES128, AES192, AES256
\li Block cipher modes: CTR, CFB, CBC, OFB
\li Stream ciphers: ChaCha
\li Hash algorithms: SHA1, SHA256, BLAKE2s
\li Hash algorithms: SHA1, SHA256, SHA512, BLAKE2s
\li Public key algorithms: Curve25519
\li Random number generation: \link RNGClass RNG\endlink, TransistorNoiseSource
All cryptographic algorithms have been optimized for 8-bit Arduino platforms
like the Uno. Memory usage is also reduced, particularly for SHA1 and SHA256
which save 256 and 192 bytes respectively over traditional implementations.
For other algorithms, static sbox tables and the like are placed into
program memory to further reduce data memory usage.
like the Uno. Memory usage is also reduced, particularly for SHA1, SHA256,
and SHA512 which save 256, 192, and 512 bytes respectively over traditional
implementations. For other algorithms, static sbox tables and the like are
placed into program memory to further reduce data memory usage.
ChaCha with 20 rounds and 256-bit keys is the recommended
symmetric encryption algorithm because it is twice as fast as AES128,
@@ -65,6 +65,7 @@ Ardunino Mega 2560 running at 16 MHz are similar:
<tr><td>ChaCha (8 rounds)</td><td align="right">8.13us</td><td align="right">8.14us</td><td align="right">43.74us</td><td align="right">130</td></tr>
<tr><td>SHA1</td><td align="right">21.90us</td><td> </td><td align="right"> </td><td align="right">94</td></tr>
<tr><td>SHA256</td><td align="right">43.85us</td><td> </td><td align="right"> </td><td align="right">106</td></tr>
<tr><td>SHA512</td><td align="right">123.25us</td><td> </td><td align="right"> </td><td align="right">210</td></tr>
<tr><td>BLAKE2s</td><td align="right">18.54us</td><td> </td><td align="right"> </td><td align="right">170</td></tr>
</table>

2
doc/mainpage.dox
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@@ -93,7 +93,7 @@ realtime clock and the LCD library to implement an alarm clock.
\li Block ciphers: AES128, AES192, AES256
\li Block cipher modes: CTR, CFB, CBC, OFB
\li Stream ciphers: ChaCha
\li Hash algorithms: SHA1, SHA256, BLAKE2s
\li Hash algorithms: SHA1, SHA256, SHA512, BLAKE2s
\li Public key algorithms: Curve25519
\li Random number generation: \link RNGClass RNG\endlink, TransistorNoiseSource